400061371 has 2 divisors, whose sum is σ = 400061372. Its totient is φ = 400061370.

The previous prime is 400061281. The next prime is 400061377. The reversal of 400061371 is 173160004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400061371 - 2²³ = 391672763 is a prime.

It is not a weakly prime, because it can be changed into another prime (400061377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200030685 + 200030686.

It is an arithmetic number, because the mean of its divisors is an integer number (200030686).

Almost surely, 2^400061371 is an apocalyptic number.

400061371 is a deficient number, since it is larger than the sum of its proper divisors (1).

400061371 is an equidigital number, since it uses as much as digits as its factorization.

400061371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 400061371 is about 20001.5342161545. The cubic root of 400061371 is about 736.8439799173.

The spelling of 400061371 in words is "four hundred million, sixty-one thousand, three hundred seventy-one".